Unit A62, Red Scar Industrial Estate, Longridge Rd, Preston, PR2 5ND
© 2018 Techni-Grind Ltd. All rights reserved.
Tecnhi-Grind has invested heavily in the latest technology with the introduction of the
Walter Regrinder. To capture a major part of BAE Systems regrinding from its
defence and commercial factories in the North West.
The Walter is the latest addition to the portfolio of high-tech machines at Tecnhi-
Grind. This Helitronic Power Regrinder can handle tools 370mm long and 320mm
diameter or 320mm for end face grinding. It is mainly being used by Techni-Grind to
process a mix of carbide and HSS cutters for the local aerospace industry.
Techni-Grind (Preston), a sub-contract supplier of precision tool regrinding services
to the aerospace industry, has installed its sixth Walter high specification CNC tool
and cutter grinder from Korber Schleifring UK of Honiley near Kenilworth - and its
new Helitronic Vision was complemented by a Walter Helicheck Basic tool
measuring machine, ensuring that the company's latest investment tranche will
speed both regrind and inspection times.
Formed in 1990, Techni-Grind has enjoyed steady growth by providing a
comprehensive regrinding service to the North West's buoyant aerospace industry.
The ISO 9001-accredited company is an approved Tier one supplier to BAE
systems, whose site at nearby Salmesbury is visited daily by Techni-Grind to ensure
a planned programme of regrinds is maintained. The company also services sites at
Brough and Barrow-in-Furness as part of BAE's Supplier Excellence Programme.
"We work in close partnership with our customers," says managing director David
Higham. “After all, if you have a £200 cutter and you want to maximise its regrind
life, we liaise with our customers' operators to ensure they understand the regrind
process. Hence we are able to generate maximum savings for our clients."
Already operating five of Walter Helitronic Power CNC tool and cutter grinders,
Techni-Grind recently wanted to extend both its capability and capacity to meet
continued demand. "Many years ago, we purchased our first CNC Walter
Helitronic," states David Higham. "At the time, the Power was clearly the most
competent machine on the market and so we committed to the Walter brand and we
have no regrets whatsoever."
Capable of processing tools up to 320 mm diameter by 300 mm long (370 mm for
peripheral grinding), the Helitronic Vision travels in X, Y and Z axes of 480 mm, 320
mm and 700 mm, respectively. Rapid traverse rates are up to 50 in/min, and the
machine boasts linear and radial resolutions of 0.0001 mm and 0.0001 deg,
The Vision has already been put to work by the company regrinding a range of HSS
and carbide end mills, slot drills, form cutters, reamers and conventional flute drills -
and it immediately produced benefits in terms of processing speed.
All of the Walter machines operate during standard working hours plus throughout a
night shift four times a week. Typically, the 21 employee company processes cutters
up to 65mm diameter and up to 300mm long.
In our conventional grinding section, we offer a vast number of years
experience in the aerospace, automotive, paper and general engineering
Catering for the small engineering workshop to the largest such as BAE
Working on one-off special form tools to the largest batch work,
including drills, reamers, milling cutters, circular knives, counter sinks,
pipe drills and special form tools.
We offer all our customers the same guarantee of a quality product on time
and to cost.
The aerospace industry demands continuity of quality," states
David Higham. "The customer wants to be certain that when a
cutter has a regrind it will be as good as new, time-after-time. The
cutters are not checked by the customer, so they need to have
faith in our processes.
"This is one of the reasons why we purchased the Helicheck Basic,
an entry-level tool inspection machine, which has replaced
conventional shadowgraph and clocking techniques. The machine
not only improves quality but also saves considerable inspection
The Helicheck Basic offers 3C Direct View camera technology with
cameras for back, front and top light illumination of tools
measuring up to 320 mm diameter by 400mm long. The back light
provides magnification of 50x, front and top of 100x and
combined with the solid granite base plate for temperature
resistance and high stability, the result is a repeatability of 1.5
micron and an absolute accuracy of +/-2.2 microns at a measuring
length of 10 mm (VDI/VDE 2671: E1 = 2.2 microns + L/300).
HSS cutters can typically withstand up to five regrinds, while carbide cutters
can take three, although it is possible to hold tighter tolerances on the latter.
“We are known for our quality service, competitive prices and on-time
delivery," says David Higham. "The industry is forever changing but through
continual improvement via, for example, capital investment, we aim to be the
number one choice for our customers, both now and in the future."
The introduction of the latest Walter technology at Techni-Grind has also led
the company to ponder tool manufacturing, something that traditionally
represents only a small portion of current business. Although our expertise is
in regrinding, with our new investments manufacturing is certainly a more
viable option and we are currently exploring a potential joint venture with one
customer," says David Higham.